Accessibility in Blazor Color Picker Component
25 Mar 20244 minutes to read
The Blazor Color Picker component followed the accessibility guidelines and standards, including ADA, Section 508, WCAG 2.2 standards, and WCAG roles that are commonly used to evaluate accessibility.
The accessibility compliance for the Blazor Color Picker component is outlined below.
| Accessibility Criteria | Compatibility |
|---|---|
| WCAG 2.2 Support |  |
| Section 508 Support | |
| Screen Reader Support | |
| Right-To-Left Support | |
| Color Contrast | |
| Mobile Device Support | |
| Keyboard Navigation Support | |
| Axe-core Accessibility Validation | |
- All features of the component meet the requirement.
- Some features of the component do not meet the requirement.
- The component does not meet the requirement.WAI-ARIA attributes
The Blazor Color Picker component followed the WAI-ARIA patterns to meet the accessibility. The following ARIA attributes are used in the Blazor ColorPicker component:
| Attributes | Purpose |
|---|---|
role |
Indicates the Color Picker component as colorand the tiles as gridcell in the color palette. |
aria-label |
Indicates the accessible name for the tiles. |
aria-selected |
Indicates the current selected state of the tile. |
aria-haspopup |
Indicates the availability of the popup element. |
aria-expanded |
Indicates whether the popup can be expanded or collapsed, as well as indicates whether its current state is expanded or collapsed. |
aria-owns |
Identifies an elements in order to define a visual, functional, or contextual parent/child relationship between DOM elements where the DOM hierarchy cannot be used to represent the relationship. |
aria-disabled |
Indicates that the element is perceivable but disabled, so it is not editable or otherwise operable. |
Keyboard interaction
The Blazor Color Picker component followed the keyboard interaction guideline, making it easy for people who use assistive technologies (AT) and those who completely rely on keyboard navigation. The following keyboard shortcuts are supported by the Blazor ColorPicker component.
| Press | To do this |
|---|---|
| Up Arrow | Moves the handler/tile up from the current position. |
| Down Arrow | Moves the handler/tile down from the current position. |
| Left Arrow | Moves the handler/tile left from the current position. |
| Right Arrow | Moves the handler/tile right from the current position. |
| Enter | Apply the selected color value. |
| Tab | To focus the next focusable element in the ColorPicker popup. |
Ensuring accessibility
The Blazor Color Picker component’s accessibility levels are ensured through an axe-core with playwright tests.
The accessibility compliance of the Blazor Color Picker component is shown in the following sample. Open the sample in a new window to evaluate the accessibility of the Color Picker Blazor component with accessibility tools.